Exactly. Many years ago my father drove a Rover 75 in the UK which used an older version of BMW's 318d engine, but of course hobbled in software so as not to de

Exactly. Many years ago my father drove a Rover 75 in the UK which used an older version of BMW's 318d engine, but of course hobbled in software so as not to deliver as much power/torque as the same engine in a BMW. For a couple hundred quid you could "chip" the engine to match or exceed the rated power of the BMW version. They even installed it in such a way that the chip could be removed before you took it in for a service so as to avoid warranty concerns etc.